Lock.



J. H. SHAW & A. A. PAGE.

LOCK.

APPLICATION FILED 1uLY20, 1912.

Patented May 4, 1915.

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, A'TTORNEIVQQ' l. H. SHAW & A. A. PAGE.

LOCK.

APPLICATION FILED IULYZO, I912- v Patent-ed May 4,

2 SHEETS-SHEET 2.

A TTORNE 6 Z i nil/Ill?! WITNESSES- TED STATES PATENT men.

JOHN H. smw,

NEC'I'ICUT, ASSIGNORS TO SABGENT & COMPANY,

A CORPORATION OF CONNECTICUT.

To all whom it may concern:

Be it known.that'we,"JoHN H. SHAW and ALBERT A. PAGE, of the city of NewHaven and town of East Haven, respectively, county 4 of New Haven, andState of Connecticut,

ticularly to locks have invented new and useful Improvements in Locks,of which the following is a full, clear, and exact description.

This invention relates to locks, and parembodying a latch bolt which canbe deadlocked by means of a thumb turn or similar instru'mentality atthe the inside of the door.

The primary objects of the invention are to provide improved means fordeadlocking the latch bolt by means of a thumb turn, or the like; tofurnish a lock having thumb 'turn operated deadlocking means for thelatch bolt which can be withdrawn from its deadlocking position by meansof a certain key called an emergency key insertible in look to retractthe latch bolt; and to provide a lock in which'the deadlocking means forthe latch bolt is movable into operative position by said emergency keyscribed and pointed out in the claims.

In the accompanying drawings, illustrative of a preferred embodiment ofthe invention, Figure 1 is an elevation of the lock, with the cap plateremoved, showing the latch bolt free to be retracted by either knob orby any of the series of keys; Fig. 2 is a similar view, showing thelatch bolt deadlocked by means of the thumb turn, so that the knobs andcertain keys are inoperative to retract it; Fig. 3 is a detail view of aportion of 1' ig. 2, illustrating the action of the emergency key inwithdrawing the deadlocking slide from the path of the bolt; Figs. 4 and5 are sections, through the complete lock, taken on line 5--5 of Fig. 2,Fig. 4 she-wing the operation of the change key, and Fig.- 5; showingthe operation of the OF NEW HAVEN, AND ALBERT A. PAGE, OF EAST HAVEN,

Specification of Letters Patent.

conor NEW HAVEN, CONNECTICUT,

Locx.

Patented May 41, 1915.

Application filedJuly 20, 1912. Serial No. 710,566.

emergency key; Fig. 6' is a rear face View ofthe cylinder lock; Fig; 7is a horizontal section through the rear portion of the cylinder lock;Fig. 8 is a detail edge view of the deadlocking slide; and Fig. 9 showsthe master and grand master keys.

The lock case 10, shown in the drawings, having the face plate 11,contains'a latch bolt 12, normally protracted by means of a spring 13,and having at the end of its stem 14 a cross-head 15. In the embodimentillustrated, the bolt is retracted by means of a yoke 16, and inner andouter roll-backs 17, 18, respectively. The outer roll-back 18 preferablyhas associated withit night latch mechanism of the usual type,comprising a dogging slide 19, a releasing slide 20, and a connectinglever 21.

The latch bolt 12 is retracted by means of a key inserted at the outsideof the look, through the intermediary of an elbow lever 22, pivoted inthe case at 23, and having a depending arm 2% coactingwith the crosshead15 of the latch bolt. The other arm 25 of the elbow lever'22 is adaptedto be depressed by the bit of a cylinder look, as hereinafter described,whereby the arm 24 of said lever is carried rearwardly, therebyretracting the latch bolt.

The parts so far described are of Well known form, and do not constitutein themselves essential features of the present invention. 1

According to this invention, the latch bolt 12 is adapted to bedeadlocked in its pro-. tracted position by means of a thumb turn, orthe like, at the inside of the door. In the lock shown inthe drawings, athumb turn hub 26 is mounted for oscillatory movement in the walls ofthe case, as shown in Figs. 1 and 5, said hub having its ends 26 formedas trunnions, having bearings in the cap plate and bottom, respectively,of the cases. The opening through the hub 26 is preferably of squarecross-section to accommodate a thumb turn spindle (not shown) of theusual form. Projecting from the thumb turn hub is an arm 27 adapted tomove in a vertical direction a slide 28 suitably guided in the case, andhaving a projection 29 to extend in the rear of the latch bolt crosshead15 in order to deadlock the latch bolt.

In the form shown, the arm 27 of the thumb turn hub fits between pins orabutments 30, 31, projecting from the deadlocking slide 28, so that ifthe arm 27 is moved downward it will abut the pin 31 and thereby movethe slide to deadlocking position, whereas if the arm is moved upward itwill abut the pin .30, and thereby remove the deadlocking slide from thepath of the latch bolt. The slide may be guided in the case between therear wall 32 of the same and a projection 33, which projection alsoserves as a stop, coiiperating with .a shoulder 34 on the slide toprevent the downward move-- ment of the slide beyond the position shownin Fig. 2, i. e., below its proper deadlocklng position. After the slidehas been moved to its operative or inoperative pos1t1o1 1, 1t is heldfirmly in such position by the frictional engagement with the cap pieceof a small coiled spring 35, socketed 1n the pro]ection 31. a

The key operated means for moving the deadlocking slide comprises a disk36 mounted for oscillation in one wall of the case, and carrying a dogor rollback 37, having aniarm 38, projecting freely into the spacebetween the pins 39, 40 on the deadlocking slide. The relation of thedog arm 38 to the pins 39, 40, is similar to that of the sleeve 43rotatable therein, a plug or barrel thumb turn arm 27 to the pins and31, so that if the arm 38 is depressed, as shown in Fig. 2, it will movedownward the deadlocking slide, while if said arm is raised, as

shown in Fig. 3, it will raise the deadlock- I mg slide into inoperativeposition.

The slide operating dog 37 is. shown as being located in that wall ofthecase which is at the inside of thedoor, and it is in substantialalinement with a cylinder lock 41 (Figs. 4 and 5), by means of which thelatch bolt retracting lever 22 is operated. This cylinder lock comprisesthe cylinder 42,- a

44 rotatable in said sleeve, and the usual tumbler pins 45. Theparticular construction of these parts is not material to the presentinvention, but in the form shown it is intended that the plug or barrel44 be operable alone by means of the. ordinary or change key 46, Fig. 4,while the master keyv 47, grand master key 48, and emergency key 49, areadapted to rotate the barrel and the sleeve together,'substantially asindicated in v Fig. 5. A dog applied to the rear end of the plug orbarrel '44 has itsbit 51 engaged in a guide-way 52 in the bit 53 of aring or dog 54 rotatably mounted on the rear end of the sleeve 43. Asthe barrel 44 is always rotated by each key of the series, (either aboutits own axis or about the axis of the sleeve 43) and as the dogs 50, 54,are locked together in the manner specified, it will be obvious that'thedog 54 is adapted to be oscillated by all of the various keys. Therotation of the dog 54 in the proper direction will cause its bit 53 tostrike the free end of a lever 55, pivoted in the case at 56,

and resting freely on the arm 25 of the latch bolt retracting lever 22.Hence, if the deadlocking slide 28 is in its raised inoperativeposition, permitting the latch bolt to be retracted, such an operationof the cylinder lock will cause the arm 25 of the latch bolt lever to bedepressed, thereby swinging said Leiier on its pivot and retracting thelatch In order to enable the door to be opened from the outside in.spite of the deadlocking of the latch bolt from the inside by means ofthe thumb turn hub 26, the emergency key 49, Fig. 5, must act on the do37 in such a manner as to retract the sli e from itsdeadlocking'position. In order to attain this end, the deadlocking dogor rollback 37 is provided with a cut-away portion 36 adapted to beengaged by a suitable part of the cylinder lock which is projected intosaid cut-away portion or recess only by means of the emergency key. Inthe embodiment shown, the dog 37 is engageable by a slide 57 movablelongitudinally in the rear portion of the cylinder. lock 41, as shown inFigs. 4 and 5. 4 This slide is guided in an extension of the ke hole, asshown in Fig. 7, and it is of suitabie form to prevent it from beingprojected out of the lock cylinder be ond the position-shown in Fig. 5.The slide 57 isnormally held by means of a coiled spring 58 with itsrear end substantially flush with guide flanges 59 projecting rearwardfrom the cylinderlock and between which said slide is confined, as shownin Fig. 7. When a change key 46,

inserted into the lock, the pointed end ofthe same will take into acorrespondingly formed cut-away portion or recess 60 in the inner edgeof the slide 57, and said slide will therefore remain in its retractedposition. The emergency key 49, however, is provided with a squared offextremity 61 which does not fit the recess 60, but, on the other hand,

comes in full contact with a portion of the edge of the slide 57, sothat the latter is thereby protracted to a certain extent, as shown inFig. 5, into a position wherein it extends into the recess 36 of the dog37.

The operation of the lock is substantially as follows: If the thumb turnhub 26 is raised into the position shown in Fig. 1, the slide 28 will belifted out of the path of the latch bolt 12, and it will therefore bepossible to retract the latch bolt by means of the inner knob and itsroll-back 17, and, in case the dogging slide 19 is in inoperativeposition, by the outer knob and its roll-back 18. The latch bolt is alsofreely retractable by any of the series of keys, under these conditions,the bit 53 of the cylinder-lock dog or rollback 54 being movable into aposition in which it depresses the arm 25 of the latch bolt lever andretracts the latter. Suppos- 01' grand master inlgainowa ated from theinside of the room and shi d to the position shown in Fig. 2, thedeadlocking slide 28 will be moved downward against the stop 35, theprojection 29 being then located immediately in the rear of thecross-head 15. It will then be impossible to retract the latch bolt bymeans of either roll-back, or by means of the change, master keys, theyoke 16 and the 22 being effectively deadlocked by the deadlocking ofthe latch bolt itself. The emergency key, however, will still unlock thedoorfrom the outside owing to the fact that the slide 57 of the cylinderlock will be operated by said emergencv key, as hereinbefore described,so that said slide while in engagement with the recess 36f of the dog37, will be rotated bodily with the rotating parts of the cylinder lock.As sa1d slide is rotated from its normal upright position (Fig. 5) intothe inclined posrtlon shown in Fig. 3, it will be so brought intocontact with the walls or edges of the recess 36 as to: shift the dog 37in the direction of the arrow, Fig. 3, thereby raising the slide 28toward its inoperative position. By the time the bit 53 of the cylinderlock abuts the lever 55 preparatory to the actuation of the latch boltlever, the deadlocking shde Wlll be substantially removed from the pathof the latch bolt, and as the emergency key is further rotated to anextent suflicient to ratract fully the latchbolt, the deadlocking slidewill simultaneously be raised to clear entirely the inwardly movinglatch bolt.

The timing of the operations of the sllde 57 and bit 53 may of course bevarled somelatch bolt lever what as desired, it merely being necessarythat as the latch bolt moves inward the deadlocking slide be in aposition to permit an unobstructed incursion of the bolt.

' It will be noted that inasmuch as the dog 37 is capable of shiftingthe deadlocking slide in either direction, said slide may be moved frominoperative into operative position from the outside of the door by theuse of the emergency key. In order to effect this result, the emergencykey is inserted in the cylinder lock and rotated in a clockwisedirection, thereby shifting the slide 28 downward into its deadlockingposition, as shown in Fig. 2. When the parts have reached the positionjust indicated, further movement of the slide, dog, and key will beprevented by the engagement of the stop lug 33 with the stop shoulder 34of the slide. The cutaway portion 36 of the dog 37 is of such form,however, as to permit the emergency key to be turned back into apositionin which it can be removed from the cylinder lock. If

any of the other. keys of the series is then insertedinto the cylinderlock, it will. be inoperative to retract the latch bolt. The latch boltmay therefore be deadlocked that the thumb turn hub be 0 r against acertain key or keys ly the use of another key at the same side 0 thedoor as well as by a thumb-turn member or the like on the opposite sideof the door.

While the foregoing description is a detailed one, in so ar as itconcerns the particular embodiment of our invention selected forillustration, it will be understood that the invention is susceptible ofnumerous other embodiments within the scope of the appended claims.

We do not claim the cylinder lock mechanism per se, as the same is theinvention of Frank I. Kimball, as claimed in his appliigtion Serial No.805,065, filed December 6,

What we claim is:

1. In a lock, the combination of a case, a

latch bolt therein, a deadlocking slide movable substantially at rightangles to the latch bolt, and adapted to deadlock the same, a cylinderlock mechanism carried by the case embodying two rollbacks, alatch-retracting lever pivoted to the case and adapted to be actuated byone of said rollbacks, the second rollback being arranged to move saiddeadlocking slide into and out of operative position, a key foroperating said first rollback to retract the latch bolt, and a secondkey for actuating both rollbacks to withdraw said deadlocking slide fromvoperative position, and then immediately retract the bolt on the samemovement of the key; substantially as described.

by the caseand having two rollbacks, one of said rollbacks being adaptedto operatesaid retracting lever, and the other rollback being adapted tooperate said deadlocking slide, said rollbacks being substantially inline with each other and located in the space between said deadlockingslide and the free end of said retracting lever, a key for operating thelatchretracting rollback individually, and a second key for couplingsaid rollbacks together, and for withdrawing the deadlocking slide fromoperative position and retracting the bolt within less than a fullrotation of the key in one direction; substantially as described.

3. In a'lock, the combination of a case, a latch bolt therein, adeadlocking slide for said latch bolt slidable at right angles to thelatter, a retracting lever for the latch bolt pivoted in the case, acylinder lock mechanism carried by the case and having a rollbackadapted to actuate said retracting-lever, said rollback normally havingan up;-

right position, a second or emergency roll tioned' operatively withrespect to said deadlocking slide, and extending at'a-n angle to thefirst rollback, a key for actuating the first rollback to retract thelatch bolt, and a second key for actuating both rollbacksLtogether tomove said slide into deadlocklng position, or to withdraw the slide fromdeadlocking position, and then retract the latch bolt on'furthermovement'of the key substantially as soon as the slide is moved out ofthe path of said bolt; substantially as described.

4. In a look, a latch bolt, a deadlocking slide movable at right anglesthereto, a retracting lever for said latch bolt, a cylinder lockmechanism having two rollback's, a key for actuating. one of saidrollbacks to operate said retracting lever and withdraw the bolt, meansfor moving said slide into dead locking position, and 'a second key formoving the deadlccking slide out of operative position by means of thesecond rollback,

and for retracting the latch bolt'by the first rollback, while the slideis being Withdrawn from operative position; substantially as described.

5. In a lock, the combination of a case, a latch bolt therein, adeadlocking slide'movable at right angles to the latch bolt, a thumbturn hub for moving said slide into and out of deadlocking position withrespect to the latch bolt, a retracing lever for the bolt pivoted in thecase, a cylinder lock mechanism out of line with said thumb turn hub,and having two rollbacks located in the space between said deadlockingslide and the free end of said retracting lever, a key for actuating oneof said rollbacks to operate said retracting lever and withdraw thebolt, and another key for operatively actuating the second rollback, inaddition to the first, and for withdrawing the deadlocking slide fromoperative position prior to the retraction of the bolt on the samemovement of the key; substantially as described.

6. The combination with lock mechanism, of a pin tumbler lock having akey plug, said key plug provided with a keyway, a rollback for operatingsaid lock mechanism connected with the rear end of the key plug, asecond rollback, a plurality of keys insertible into said keyway, and aslide in said keyway movable relative to said first-rollback by only oneof said keys, and adapted to actuate said lock mechanism by means ofsaid second rollback; substantially as. de-' scribed.

7. The combination with lock mechanism, of a pin tumbler lock having akey plug, said key plug provided with a keyway, a rollback connectedwith the rear end of the key plug, and adapted to operate a part of saidlock mechanism, a secondrollback, a plurality of keys insertible intosaid keyway, and a slide movable relative to said 4 members therein,

end of the one part or member of said mortise lock, a

but not by another key,

said keys, and adapted when so moved to operate another part of saidlock mechanism by means of said second rollback when said keyis'rotated, said slide being operative by another of said keys;substantially as described.

8. The combination with a mortise lock having a case and two separateparts or of a pin tumbler lock having a key plug, said key plug providedwith a keyway, a rollback connected with the rear key plug, and adaptedto operate second rollback adapted to operate another part or member ofsaid mortise look, a plurality of keys insertible into said keyway,

and a sliding member shiftable longitudinally of the keyway by one ofsaid keys and adapted when so shifted to operate the second-hand part ormember of said mortise look by means of said second rollback;substantially as described.

9. The combination with a mortise lock mechanism having two parts ormembers, of a cylinder lock sertibleinto said keyway, another anddifferent key insertible into said keyway, a rollback carried by saidcylinder lock to cooperate with one of said parts or members, andoperable by both of said keys, and a slide projecting into the rear ofthe keyway, and movable rearwardly by engagement with one of said keysinto cooperation with ,said other part or member of said mortise lockmechanism, said key-engaging slide being inoperative by said other key;substantially as described. r

10. A cylinder lock having a .key plug, said key plug provided with akeyway, a change key, insertible into said keyway, an emergency keyinsertible into said keyway, a rollback operatively connected with saidkey plug and rotatable by both of said keys, and a spring-pressed slideprojecting into the rear end of the keyway, and movable rearwardly bysaid emergency key, said slide being substantially immovable by saidchange key, in combination with a mortise lock mechanism having a partto cooperate with said rollback, and another part to cooperate with saidslide; substantially as described.

11. A cylinder lock having two keys, a rollback operable by both of saidkeys, and a coupling slide forming a part of said cylinder lock, andslidable by one of said keys but not by the other key, in combinationwith a lock mechanism having a part to cooperate with said rollback, andanother part to cooperate with said coupling slide; substantially asdescribed.

12. cylinder lock having a keyway, two keys insertible into said keyway,and of having a keyway, a key in' bolt, a retracting mechanism therefor,a

deadlocking mechanism therefor, a pin tumbler lock having a key plug,said key plug provided with a keyway, a rollback for operating one ofsaid first-named mechanisms, connected with the rear end of the keyplug, a second rollback, a plurality of keys insertible into the keyway,and a member movable relative to said first rollback by only one of saidkeys, and adapted to actuate the other of said two mechanisms by meansof said second rollback; substantially as described.

14. In a .lock, the combination of a latch bolt, a retracting membertherefor, a member for dogging said bolt in a definite position, a pintumbler lock having a key plug, said key plug provided with a keyway, arollback for operating one of said firstnamed members, connected withthe key plug, a second rollback, a plurality of keys insertible intosaid keyway, and a slide in the, keyway movable relative to said firstrollback by only one of said keys, and adapted to actuate the second ofsaid first-named members by means of said second rollback; substantiallyas described.

15. In a lock, the combination of a latch bolt, a retracting levertherefor, a deadlocking slide for said bolt, a pin tumbler lock having akey plug, said key plug provided with a keyway, a rollback for operatingsaid retracting lever, connected with the rear a end of the key plug, asecond rollback, a

plurality of keys insertible into said keyway, and a member movablerelative to said first rollback by only one of said keys, and adapted toactuate said deadlocking slide by means of said second rollback;substantially as described.

16. A pin tumbler lock having a key plug, said key plug provided with akeyway, a rollback connected with the rear end of said key plug, and akey-engaging slide in the keyway, in combination with a mortise lockmechanism having a part to cooperate with said rollback, and a part tocooperate with said slide; substantially as described.

17. A pin tumbler lock having a key plug, said key plug provided with akeyway, a rollback connected with the rear end of the key plug, a secondrollback, and a springpressed key-engaging slide for actuating thesecond rollback movable relative to the first rollback, in combinationwith a mortise lock mechanism having a part to cooperate with one ofsaid rollbacks, and another part to cooperate with the other of saidrollbacks;

substantially as described.

18. A pin tumbler lock having a key plug, said key plug provided with akeyway, a rollback connected with the rear end of the key plug, a secondrollback, a plurality of keys insertible into said keyway, lockmechanism, and a slide movable relative to said first rollback by onlyone of said keys, and adapted to actuate said lock mechanism by means ofsaid second rollback; substantially as described.

19. A cylinder lock having a keyway, a rearwardly movable slide in therear portion of said keyway, for operating a part outside of saidcylinder lock, said slide normally retracted with respect to saidkeyway, a key formed to shift said slide rearwardly as the key isinserted into the keyway, and another key fully insertible into thekeyway without shifting said slide, in combination with a lock mechanismhaving a part in operative association with the key plug, when saidslide is retracted, and another part adapted to be operated by saidslide when the same is moved rearwardly by said first-named key;substantially as described.

20. A cylinder lock having a rearwardly movable slide mounted in therear end portion of the keyway, a key insertible into said keyway toshift said slide rearwardly, a second key fully insertible into saidkeyway without shifting said slide, and a spring to return said slide'toa definite normal position when said first key is withdrawn, incombination with a lock mechanism having a part operatively associatedwith said cyla change key insertible into said keyway,,

an emergency key insertible into said keyway, a rollback operativelyconnected with said key plug and rotatable by both of said keys, and aslide projecting into the rear end of the keyway, and movable rearwardlyby said emergency key into position to operate a part of said mortiselock mechanism, said member being immovable into operative position bysaid change key; substantially as described.

22. A cylinder lock having two keys, a rollback operable by both of saidkeys, and a slide to operate a part outside and at the rear of saidcylinder lock, operative by one of said keys but not by the other key,in combination with a mortise lock 'niechanism having a part tocooperate with said rollback, and a second part into 006 eration" withwhich said slide is movable y said "first-named key; substantially asdescribed.

23. A cylinder lock having a key plug, said key plug provided wlth akeyway, P111 tumblers cooperating with said key plug, a key insertibleinto said keyway to rotate said key plug, another and different keyinsertible into said keyway to rotate said key plug, and a slide adaptedto project out of the rear end of said cylinder lock, and

having a part extending into said keyway,

andmovable rearwardly by one of said keys but not by the other key, incombination 'operativeassociation with said cy with a lock mechanismhaving a incoinder lock when said slide is in its vforward position,

and another part adapted to cooperate with 5 said slidewhen the latterismoved rear 1 wardly; substantially as described.

In witness whereof, we have hereunto set our hands on the 19th day ofJuly, 1912.

JOHN H. SHAW. ALBERT A. PAGE. Witnesses: i

REUBEN B. CHERnY, BERTHA RAY.

